Patients can take methylcobalamin after drinking alcohol, alcohol and methylcobalamin have no adverse reaction, but it is not recommended to drink alcohol during the period of sick medication, methylcobalamin belongs to the endogenous vitamin B12, which is more widely used in the clinic, and the side effects are relatively few. If there is gastric ulcer and other diseases, it is recommended that methylcobalamin be taken orally with caution. Methylcobalamin is mainly a nutritive nerve drug, which can promote the synthesis and recovery of nerve demyelination, so it can treat peripheral neuropathy. During this period, patients should not drink alcohol, because alcohol will aggravate peripheral nerve damage, such as peripheral facial paralysis or diabetes caused by peripheral nerve disease, numbness and pain in the limbs, or because of long-term alcohol consumption, exposure to chemicals after the peripheral nerve damage, you can take methylcobalamin to improve the symptoms of numbness in the limbs, during this period, do not recommend that the patient drink alcohol, because alcohol will aggravate the damage to peripheral nerves.